Pipe-wrench.



P. SMITH. PIPE WRENCH.

APPLICATION FILED APR. ll, I918.

1,288,? 1-9. Patented Dec. 24, 1918.

INVENTOR BY @MW ATTORNEY n! m; runs no 'umutua. wlsmuarok u Ill) EUGENE P. SMITH, OF SHELBY, OHIO.

PIPE-WRENCH.

Specification of Letters Patent.

Patented Dec. 24., 1918.

Application tiled April 11. 1918. Serial No. 227,937.

7'0 all whom it may concern:

Be it known that I, Eoosa'n 1. baurii. a citizen of the United States, residing at Shelby, in the county of Richland and bitaie of Ohio, have invented certain new and useful Im rovemcnts in Pipe-Wrenclie-, of which tie following is a specification.

This invention is a wrench and has a special reference to that class of wrenches commonl known as pipe wrenches.

One ject of this invention is the production ot a pipe wrench wherein a movable jaw may be quickly and easily moved to an ad'usted position and then held against ac- (-lt Oliltll movement.

Another object of this invention is the production of a pipe wrench wherein a cam engages the move le jaw for firmly holding the same in engagement with a melt block, thus holding the jaw against movement after being moved to an adjusted position.

Another object of this invention is the production of a ipe wrench wherein there is provided a pirotally sup )orted springactuated slide block, this side block ongaging the shank of the movable jaw for forcin the same from engagement with the rec block, when such movement permits by prior actuation of the cam, thus permittin the movable jaw to be moved to a desiret position.

Broadly stated, this invention consists at it fixed jaw having a handle extendin therefrom, a housing pivotally mOllliiN upon said handle, a rack block fixedly earried by said housing, a spring-actuated slide block carried by said housiu a sliding jaw having a shank rovi ed with rack teeth, and a cam carried by said housing and engaging one side edge of the shank 0 said movabe 'aw, thus allowing the shank to be move into en gement with the rack block for holding t e jaw against accidental movement althou b said slide block will engage said shank or urgin the same from engagement with said rack look when the cam has been turned to a necessary position.

With these and other objects in view, this invention consists of certain novel coinbinations, constructions and arrangement. of parts as will be hereinafter fully described and claimed.

One practical form of construction and assembly of the present invention will be hereinafter described and is illustrated in the accompanyin drawing, in which- Figure 1 is a si e elevation of the wrench, partly in section, with one plate and the spacing block of the housing removed, illustrating the wrench in condition for perinitting of movement of the movable jaw.

Fig. 2 is a view similar to Fig. 1, showing the wrench in a locked condition or when the movable jaw is held in an adjusted setposition, and

Fig. 8 is a section taken on the line 3-3 of Fig. 1, looking in the direction of the arrows.

In the preferred embodiment of the present invention, about to be described, 5 designates the handle having a fixed jaw 6 thereon, this jaw 6 being serrated, as indicated at 7. The handle 5 is provided with an enlargement 8 upon one side thereof and the pivot lugs 9 extend from opposite sides of this enlargement 8.

The housing comprises a pair of side plates 10 carried in s )aced relation with respect to each other and a block 11 is interposed between the rear portions of the side plates it], as illustrated in Fig. 3. The rivets 12 pass through the side plates and also through the block 11, thus holding these elements in fixed engagement with each other. The forward portions of these side plates of the housing are spaced apart to receive the operating elements of the wrench as is obvious from an inspection of Fig. 3. The lugs 9 largenieiit 8 of the handle 5 are carried by the side plates 10 of the housing, thus pivotally supporting the handle and the fixed jaw upon this housing. Projections 13 extend from the front edges of the plates 10 and carry a bearing river 14,'as shown in Figs. 1 and 2. The flat spring 1515 fixedly carried by the screw 16 upon the fixed jaw and the. free end of this s ring 1 bears upon the hearing rivet- 14 or normally urging the handle 5 in one direction as will be hereinafter more fully specified.

The rack block 17. is provided with a pocket 18 in one side thereof into which the enlargement 8 of the handle 5 extends. This rack block 17 is held in fixed engagement with the housing by rivets 19, these rivets 19 passing throu the side dates 10 of the ousing and a so through t e rack block 17. This rack block 17 is rovided with rack teeth 20 u on one side t. ereof, while it will be noted t at this rack block 17 terminates of the enshort of one side of the housing. This rack block however, is carried within the housing for the greater portion of its distance, as will be seen by referring to Figs. 1 and 2.

The slide block 21 is of an elongated construction and has a squared-face bearing lug 22 adjacent its inner end. This slide block 21 is pivotally mounted upon the rivet '23 passing therethrough and carried by the side walls 10 of the housing. The slide blOt'k 21 is carried in direct alinement with the rack block 17 to engage the shank of the movable jaw to be hereinafter specified. This slide block '21 is normally urged in one direction by the tension of the coil spring 24, this coil spring 24 having one end carried within the pocket 25 formed in the handle 5, while the opposite end of this coil spring bears against the slide block 24.

The movable jaw 26 has a serrated inner surface 27, while the shank 28 extends from this jaw. This shank 28 is provided with teeth 29 upon its inner side edge, although the rear edge 30 of the shank '28 is straight throu hout; its entire length. The shank 2s extends through the housing to carry the movable jaw 26 in alinement with the fixed jaw 6. It is therefore obvious that when it is desired, the serrated surface 27 of the movable jaw 26 will move toward the serrated surfa .e of the fixed jaw 6, thus moving the movable jaw to an adjusted position to provide sufficient space for the a-cconnnodation of av pipe between the jaws. A pin 31 extends through the outer end of the shank 28 and this pin holds the shank from being accidentally Withdrawn from engagement. with the housing, for upon the shank being moved to a certain position with respect to the housing, the in 31 will engage the housing and.thus limit further movement of the shank in one direction.

The cam 32 is headed as indicated at 33 and extends through the housing as shown clearly in several figures ofthe drawing. This cam 32 is cut away to form a flat bearing face 34, while the remaining surfaceadjacent the flatface is rounded as indicated at This cam 32 extends beyond the outer surface of the housing and has the lever 36 secured thereto in any suitable manner. so that when the lever is swung it will impart rotar motion to the cam.

When this device is in use, the lever 36 is swun outwardly to the position indicated in full ines in Fig. 1, thus causing the flat face 38 of the cam to engage the rear straight edge 30 of the shank 28 of the movable aw 26. At this time the slide block '21 will be bearing upon the side edge of the shank 28 which has the teeth 29 and owing to the coil spring 24 urgin this slide block 21 in one direction, this slide block will urge the shank 28 into engagement with the fiat face 34 of the cam 32. This shifting movement of the shank will cause the teeth of the shank to disengage the teeth of the rack block 17, thus allowing the movable jaw to be shifted to a desired adjusted position. After this action the lever 36 is swung around to move the liat surface 3% of the cam from engagement with the rear straight edge 30 of the shank 28, thus causing the broadest diameter of the cum to be engaged with the shank and hold the shank in engagement with the rack block 17. Therefore, it is obvious the shank will be held against further movement and the movable jaw will therefore be held in adjusted osition with respect. to the fixed jaw. Owing to the pivotal support of the handle 5, it is obvious the handle may pivot in the direction of the slide block. thus causing a pipe to be gripped between the two jaws. to be more firmly held. It. will be noted however, that the pivotal movement of the handle upon the housing will be limited b engaging the bearing lug 22 of the slide b ock 21 upon one side of the handle as illustratcd in Fig. '2.

As this bearing lug is in direct alinement with the rivet '23, it will be seen that. the handle will be a ainst further swinging movement independent of the remaining elements of the wrench and thus prevent injury to the elements of the wrench. l'lowever. a firm bearing is provided for the handle for assisting in the rotation of the pipe gripped by the wrench.

When it is desired to again adjust the sliding or movable jaw, the lever is swung out\\-'ardly to cause the slide block to move the shank from engagement with the rack block thus permitting movement. of the movable jaw.

From the foregoing description it will be seen that a very eflicient pipe wrench has been produced which may be easily adjusted by the movement of the lever and then by the subsequent shifting of the movable jaw. after which action the lever may he returned to its normal position to extend in an out of-the-wa manner, whereby the shank of the movable jaw will be again held in the locked position for preventing accidental movement of the movable jaw.

The foregoing description and the drawings have reference to what may be consid ered the preferred, or approved, form of my invention. It is to be understood that I may make such. changes in construction and arrangement and combination of parts. materials, dimensions, et cctera, as may prove expedient and fall within the scope of the ap ended claims.

Havin thus fully described my invention. what I c aim as new and desire to secure bv Letters Patent, is

1. In a wrench of the class described, the combination of a fixed jaw having a handle extending therefrom, a housing connected to lllll said shank from a set position,'and means said fixed jaw and handle, a rack block carried by said housing, a slide block carried engagement with said rack block for holding said movable jaw in an adjusted position and said last mentioned meansbeing adapt-' ed to release said shank from a set position, whereupon said slide block will move said shank from engagement with the rack block for allowing the movable aw to be shifted.

In a device of the class described, the combination ofa fixed jaw having a handle extending therefrom, a housing connected to said jaw and handle, a rack block carried by said housing, a slide block pivotally mounted upon said housing, means for urging said slide block in one direction, a movable jaw having a shank extending through said housing, a cam carried by said housing, means for shifting said cam, thus causing said shank to be held in engagement with said rack block for holding the jaw in an adjusted condition, and said cam being adapto'd to move, whereupon said slide block will shift said shank from engagement with the rack block forpermitting themovable jaw to be shifted; I

3. In a wrench of theclass described, the combination of a fixed j aw having a handle extending therefrom, a housing connected to said fixed jaw and handle, a rack block car ried by said housing, a movable j awrhaving a shank extending through said housing,

for moving said shank from engagement with the rack blockfor allowing the movable jaw to be shifted without interference. l. In a device of the class described, the combination of a fixed jaw having a handle extending therefrom, a housing connected 1 tosaid aw and handle,a rack block earned by said housing, a movable aw havinga shank extending through said housing, a cam carried by said housing, means for shifting said cam, thus causing said shank to be held I in engagement with said rack block for holding the movable jaw in an adjusted position, said cam, being adapted to move to release the shank from a set position, and

, means for shifting said shankfromengage- 7 ment with the rack block for permitting the.

i Copies of this patent may be obtained for removable jaw to be freely shifted.

a t In a wrench of the class described, the I combination of a fixed jaw havingahandle a fthus holding justed position, said means being adapted to release said shank from a'set position,

extending therefrom, a housing connected to said fixed jaw and handle, a rack block carried by said housing, a a movable slide through said housing, means for releasably holding sa d shank 1n engagement w1th said block carried by said housing, means for i I urging said slide block in one direction, a movable jaw having a shank extending rack block for holding said movable jaw in a an adjusted position, said last mentioned means being adapted to release saidshank from a set position, whereupon said slide block will move said shank from engagement withvthe rack-block for permitting the V to said xed jaw and handle, a rack block carried by said housing, .a slide block pivotally mounted upon said housing, a spring engaging said slide block for normally urging the same in one direction, a movable jaw having a shank extending through said' housing, means for releasably holding said shank in engagement with said rack block,

said movable jawin'an adwhereupon said slide block will move vsaid shank from engagement with the rack block, thus permitting the movable jaw to be freely shifted.

7. In a device of the class described, the

combination'of a fixed jaw having a handle extending therefrom, a housing connected to said jaw and handle, a rack block carried by -said housing, 1 'a slide block pivotally mounted upon said housing, "said handle I having a socket in alinement with saidaslide' block, a coiled spring carried within said socket and extending into engagement with said slide block for normallyvurging the slide block in one direction, a movable jawhaving a shank extending through said 'housingfafcam carried by said housing,

means forshifting said cam, thus causing f said handle to be held in engagement with --'said rack block, thus holding the jaw in an adjusted position, and said cambeingadapfi ed to move, whereupon said slide block will swing to shift saidshank from engagement with the rack block, thus permitting the movable jaw tobe easily shifted.

In testimony whereof I afiix my signature inpresenceoftwo witnesses.

a I j EUGENE P. SMITH. Witnesses: g a o JEssIE C. MARVIN,

' C. J. LASER.

five cents each, by addressing the Commissioner- 9! Patents, Washington, D. 0. a I 

